Speed-governor.



E. PODLEKK.

SPEED GOVERNOR. APPLICATION FILED JUNE 10, 1911.

Patented Sept. 19, 1911.

[NVENTOR- 577225 Pmfieai/ EMIL ronLEsAK, or TIFFIN, OHIO.

SPEED-GOVERNOR.

Specification of Letters Patent.

Application filed June 10, 1911.

Patented Sept. 19, 1911.

Serial No. 632,376.

To all whom it may concern:

Be it known that I, EMIL PoDLEsAK, a citizen of the United States, residing at Tiffin, in the county of Seneca and State of Ohio, have invented certain new and useful Improvements in Speed- Governors for Magnetos, of which the following is a specification.

This invention relates to a speed governor for magnetos, generators and the like, of that type that are frictionally driven from the rim of an engine fly wheel or other rotating element whereby thepressure of the frictional engagement between the pulley or driven element of the governor and fly wheel or driving element can be varied so that more or less slip can take place between the said elements to maintain the rotor of the current generator substantially constant.

The principal object of the invention is to improve, simplify and oheapen controllers of the centrifugal type so as to be reliable and eficient in use, and in which the parts are so designed as to be easily manufactured and assembled.

Another object of the invention is to provide a novel arrangement of centrifugal elements or weight-carrying levers that are so designed and arrangedas to act directly on the wheel or driven element or a part attached thereto for varying the frictional engagement between the fly wheel and driven element by the in and out movement of the free ends of the centrifugal elements that operate against the tension of a suitably arranged spring.

With these and other objects in view, as will appear as the description proceeds, the invention comprises the various novel features of construction and arrangement of parts which will be more fully described hereinafter and set forth with particularity in the claims appended hereto.

In the accompanying drawing, which illustrates one embodiment of the invention, Figure 1 is a perspective view of the governor or automatic clutch device. Fig. 2 is an elevation partly in section showing the details of construction. Figs. 3 and 4 are perspective views of one section of the driven element showing the same from opposite sides, respectively. Fig. 5 is a perspective view of one of the centrifugal elements. Fig. 6 is a perspective view of the yoke or cross bar that is fastened to the frictionally driven wheel or pulley and on which the centrifugal elements act to draw the pulley away from the fly wheel. Fig. 7 is a diagrammatic View showing how the device is set relatively to a driving fly wheel.

Similar reference characters are employed to designate corresponding parts throughout the views.

Referring to the drawing, 1 designates the shaft of the rotor of amagneto or dynamo on which the speed governor or automatic clutch device A is mounted. At the extremity of the shaft 1 is a frictionally driven element 2 which may be of any suitable construction so as to engage With a driving element which may be a fly wheel, disk, pulley, or the like, driven in any suitable manner. In the present instance, the element 2 consists of a section of leather 3 that is pressed or otherwise formed into cup shape so as to be clamped between the two cup-shaped metal sections 4 and 5, all

of which parts are in nested relation with the periphery of the leather section 3 projecting beyond the peripheries of the sections 4 and 5, so that the edge 6 of the leather can bear on the fly wheel or other driving part.

The section 4 has an outer hub extension 7 which has oppositely-disposed bosses 8 which are provided with apertures 9 that run entirely through the section 4 for receiving rivets or equivalent fastenings 10 which pass through openings 11 and 12 in the parts 3 and 5, so that the three sections of the driven pulley 2 will be rigidly fastened together. In the cup side of the element 4 is a tubular extension or boss 13 in line with the hub 7 and a single bore passes through this extension 13 and hub so as to provide a substantial bearing on the shaft 1 for the pulley or driven element 2. The tubular extension 13 passes through openings 15 and 16 of the leather section 3 and clamping section 5. The hub 7 and bosses 8 terminate in a flat transverse face 17 on which bears the yoke or cross bar 18, the same having at its middle oppositely-disposed ears 19 that are provided with apertures 20 for receiving the rivets or fastenings 10 so that only two fastenings are required to hold the parts 3, 4, 5 and 18 together as a unitary structure. The yoke 18 is a flat sheet metal punching that has a central opening 21 through which the shaft 1 extends, and in the ends of the yokeare I alining slots 22 arranged in the longitudinal center line of the yoke and having their inner ends terminating short of the central opening 21 and their outer ends open.

The frictionally drivenelement 2 is longitudinally slidable of the shaft 1 so that the grip between the driving and driven elements can be varied, and this movement of the driven element is effected by a pair of centrifugal elements or levers 23 which are fastened to a collar 24 clamped to the shaft 1. These levers are constructed as shown in Fig. 5 and consist of a bar-like sheet metal punching having a pivot opening 25 in one end for receiving the pivot 26 which connects the centrifugal element or lever with the collar 24, and on the other end of the lever 23 are fastened at opposite sides weights 26 in the form of. rings that are secured in place by a rivet 27 passing through the rings and end of the lever 23. The weighted or free ends of the levers or elements 23 pass through the slots 22 in the yoke 18 and the weights or rings 26 of the extremities of the yoke, as the centrifugal elements move inwardly and outwardly.

The collar 24 is spaced a short distance from the yoke 18, and interposed between the collar and yoke and surrounding the shaft is a compression spring 28 which presses the yoke, together with the pulley 2, outwardly from the collar24 that forms a fixed abutment for the spring, and in this manner the spring yieldingly holds the centrifugal elements 23 indrawn against the inner ends the yoke in assembling the parts of the device. The collar 24 is composed of two complementary sections which are preferably sheet metal stampings formed with outbent central portions a and a so as to accqmmodate the shaft 1, and beyond the outbent central portions are lugs b and I) through which the rivets 26 pass. Also extending through the lugs are bolts 29 which serve to frictionally clamp and bind the collar on the shaft 1. the collar is unclamped from the shaft and the whole device can be slipped longitudinally oil the end of the latter. The two parts of the collar 24 and the centrifugal elements 23 constitute a separate unitary part of the device, while the friction pulley 2 and yoke constitute another unitary part. After these two parts are completed, it is 'merely necessary to assemble them and the helical spring 28. In assembling the parts,

one centrifugal element 23 is inserted in its respective slot of the yoke 18 and the spring 28 then placed between the yoke and collar.

ing uncoupled. Since the collar, spring and pulley are in axial alinement, the device can be readily slipped on the shaft 1 and clamped in place by the tightening of the bolts 29. It will thus be seen that the device is extremely easy and inexpensive to manufacture and assemble because the design is such that no special skill is required on the part of the workman.

In Fig. is shown the manner in which the device is used in connection with the fly ,wheel, the dotted lines B showing a fly wheel which drives the pulley 2 from the side face of the rim while the dotted lines C designate a fly wheel which has its circumferential surface engaging the leather part of the pulley. centrifugal elements ride on the arms or From the foregoing description, taken in connection with the accompanying drawing, the advantages of the construct-ion and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains, and while I have described the principle of operation of the invention, together with the apparatus which I now consider to be the best embodimentthereof, I desire to have it understood that the apparatus shown is merely illustrative, and that such changes may be made when desired as are within the scope of the cla1ms appended hereto.

Having thus described the invention, what I cla m as new, is 2- 1. A speed governor of the class described comprising'a frictionally driven element including a yoke, a shaft, a collar for fastening the governor to the shaft, weighted centrifugal elements pivoted on the collar and having their free weighted ends slidably engaged with the yoke, and a compression spring interposed between the yoke and collar and yieldingly holding the said elements indrawn. By loosening these bolts,

2. A speed governor of the class described comprising a rotary element having oppositely-disposed arms each provided with a longitudinal slot open at its outer end, a shaft, a collar for clamping the governor to the shaft, centrifugal elements pivoted to the collar and extending through the slots of the said arms and having weighted free ends which slidably engage the sides of the arms opposite from the collar, and yieldin means acting between the collar and sai rotary element to yieldingly hold the centrifugal elements indrawn.

3. A speed governor of the class described comprising a rotary frictionally driven element including a yoke rigidly fastened thereto and having alining slots in its opposite extremities, a shaft, means for clamping the governor to the shaft, centrifugal elements pivoted on the said means and passing through the slots, said elements having enlarged weighted free ends that slidably ride inwardly and outwardly on the yoke, and a helical compression spring interposed between and having its ends bearing on the said means and yoke and interposed between the centrifugal elements for holding the latter yieldingly indrawn to the inner ends of the said slots.

4. A speed governor of the class described comprising a rotary frictionally driven element having a central shaft opening and including radiating arms provided with slots open at their outer ends, a shaft, an attaching collar on the shaft and spaced axially from the element, weighted levers pivoted on the collar and passing through the slots of the said arms and having enlarged free ends movable inwardly and outwardly on the arms, and a spring arranged coaxially with the collar and element for yieldingly opposing the outward movement of the levers, said collar consisting of complementary sections between which the levers are pivoted, and fastenings passing through the said sections for clamping the collar to the shaft with which the governor is used.

5. A speed governor of the class described comprising an attaching collar, centrifugally acting levers pivoted thereto and having enlarged weighted free ends, a frictionally driven element controlled by the levers, yielding means for opposing the centrifugal action of the levers, said element comprising a wheel composed of a plurality of parts, a yoke with which the levers engage, and fastenings rigidly securing the" said parts and yoke together.

6. A speed governor of the class described comprising a frictionally driven wheel composed of a plurality of sections, a yoke applied to one of the sections, rivets passing through the sections and yoke for securing the parts rigidly together, in combination with centrifugal elements having free weighted ends slidably engaged with the yoke, an attaching collar to which the elements are pivotally connected and which is connected with the said frictionally driven wheel by the said elements and yoke, and a spring interposed between the collar and yoke.

7. A speed governor of the class described comprising a frictionally driven wheel composed of an element for frictionally engaging with the driver, clamping sections for holding the element, one section having a hub projecting from one side, a yoke rigidly fastened to the said hub and having oppositely-disposed arms provided with slots that are open at their out-er ends, a collar spaced from the yoke and composed of two 7 parts, levers passing through the slots of the yoke and extending between the parts of the collar, rivets for-securing the parts of the collar together and pivotally connecting the levers thereto, weights in the form of rings riveted to the free ends of the lovers and movable inwardly and outwardly on the yoke, a spring interposed between the collar and yoke for opposing the outward movement of the weighted ends of the levers, and, fastenings passing through the parts of the collar for clamping the same on the shaft to be driven.

In testimony whereof I aifix my signature in presence of two witnesses.

EMIL PODLESAK.

Witnesses:

JENNIE H. Freon, H. W. MICHAELS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 13:0. 

